2172850 has 12 divisors (see below), whose sum is σ = 4041594. Its totient is φ = 869120.

The previous prime is 2172847. The next prime is 2172851. The reversal of 2172850 is 582712.

It can be written as a sum of positive squares in 3 ways, for example, as 1692601 + 480249 = 1301^2 + 693^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (2172851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21679 + ... + 21778.

2^2172850 is an apocalyptic number.

2172850 is a deficient number, since it is larger than the sum of its proper divisors (1868744).

2172850 is a wasteful number, since it uses less digits than its factorization.

2172850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43469 (or 43464 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2172850 is about 1474.0590218848. The cubic root of 2172850 is about 129.5219125822.

The spelling of 2172850 in words is "two million, one hundred seventy-two thousand, eight hundred fifty".